I want to use unicode character 2259 "estimates" in my document, but cannot find it in the symbols-a4 list or via detexify.
It looks exactly like this: ≙
The closest I get is \triangleq: ≜, but it has a different meaning.
4 Answers
Use \overset from amsmath:
\documentclass{article}
\usepackage{amsmath}
\newcommand{\estimates}{\overset{\scriptscriptstyle\wedge}{=}}
\begin{document}
$A\estimates B$
\end{document}
It won't work in sub/superscripts, but I don't think you need the symbol there.
A different realization is with
\newcommand{\estimates}{\mathrel{\hat{=}}}
that would produce
With the package fontspec, you may call each symbol by its unicode. In this case, the command would be $\symbol{"2259}$. You just have to look for fonts, which are giving you this symbol.
Here are 4 examples:
% arara: lualatex
\documentclass{article}
\usepackage{unicode-math}
\usepackage{booktabs}
\usepackage{fontspec}
\begin{document}
\begin{tabular}{ll}
\toprule
Example & Font\\ \midrule
$a\wedgeq b$ & Latin Modern Math\\
\setmathfont{xits-math}$a\wedgeq b$ & XITS Math\\
\setmathfont{asana-math}$a\wedgeq b$ & Asana Math\\
\setmathfont{texgyrepagella-math}$a\wedgeq b$ & TeX Gyre Pagella Math\\
\bottomrule
\end{tabular}
\end{document}
-
thanks! unfortunately i am not using 'XeTeX or LuaTeX', but 'unicode-math' and 'font spec' require that...– BurcardoJun 27, 2014 at 11:24
You can use STIX fonts if you don't mind.
\documentclass{article}
\usepackage{stix} % (Times style) Main fonts of the document will be changed
\begin{document}
$a \wedgeq b$
\end{document}
-
@Burcardo: It is possible to use only one symbol from the font package. But that's tricky. You can combine two symbols via
\stackreletc., although that isn't perfect.– Leo LiuJun 27, 2014 at 12:58
$\stackrel{\wedge}{=}$?symbols-a4). Detexify would not always be accurate, and I'm not sure how often it is updated. For example,\correspondsmay have been added recently (or more recent than what is loaded in Detexify).